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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2023
Earnings Per Share [Abstract] |
Schedule of Earnings Per Weighted Average Common Share Outstanding | The following table presents the calculation of Pinnacle West’s basic and diluted earnings per share (in thousands, except per share amounts):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
Net income attributable to common shareholders | $ | 398,214 |  |  | $ | 326,326 |  |  | $ | 501,580 |  |  | $ | 507,594 |
Weighted average common shares outstanding — basic | 113,464 |  |  | 113,211 |  |  | 113,411 |  |  | 113,162 |
Net effect of dilutive securities: |  |  |  |  |  |  |
Contingently issuable performance shares and restricted stock units | 374 |  |  | 252 |  |  | 307 |  |  | 214 |
Weighted average common shares outstanding — diluted | 113,838 |  |  | 113,463 |  |  | 113,718 |  |  | 113,376 |
Earnings per weighted-average common share outstanding |  |  |  |  |  |  |
Net income attributable to common shareholders — basic | $ | 3.51 |  |  | $ | 2.88 |  |  | $ | 4.42 |  |  | $ | 4.49 |
Net income attributable to common shareholders — diluted | $ | 3.50 |  |  | $ | 2.88 |  |  | $ | 4.41 |  |  | $ | 4.48 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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